Wild About Harry (2000)

Synopsis
A woman who wants to get rid of her husband has second thoughts when he's suddenly not the man he once was in this romantic comedy shot in Ireland. Harry McKee (Brendan Gleeson) is the host of a long-running television series called "What's Cooking?" in which he shares recipes with celebrity guests. Harry is also an alcoholic, and chronically unfaithful to his wife Ruth (Amanda Donohoe), which has earned him a certain amount of bad publicity over the years. Ruth decides she's had enough of Harry's unreliability and demands a divorce, which Harry is in no position to contest. But the day before their divorce is to be declared final, Harry is attacked by muggers; his injuries leave him severely disoriented, and as a result he humiliates a powerful politician (James Nesbitt) on the air before passing out and falling into a coma. A week later, Harry regains consciousness, but something has happened to his memory -- he can't recall anything that has happened in the past 25 years, and he's convinced that he is only 18 years old. Ruth discovers her husband is now literally a different person, and with a little prodding she's able to re-educate Harry into a sweet-tempered and monogamous teetotaler. Harry isn't able to leave his past entirely behind, however; even if he can't remember it, the politician he embarrassed is eager to get revenge. Wild About Harry also features George Wendt and Adrian Dunbar. ~ Mark Deming, All Movie Guide